These optimizations are difficult to implement, frequently error-prone, and lead to inconsistent behavior across runtimes. Bun's "Direct Streams" optimization takes a deliberately and observably non-standard approach, bypassing much of the spec's machinery entirely. Cloudflare Workers' IdentityTransformStream provides a fast-path for pass-through transforms but is Workers-specific and implements behaviors that are not standard for a TransformStream. Each runtime has its own set of tricks and the natural tendency is toward non-standard solutions, because that's often the only way to make things fast.
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第二十九条 对涉及重大问题或者行政执法机关未按照行政执法监督督办函要求履职、未按照行政执法监督意见书要求纠正的，由行政执法监督机构提出处理建议，报本级人民政府决定；本级人民政府决定纠正的，制发行政执法监督决定书予以纠正。